<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>主页</title>
</head>
<body>
    <form enctype="multipart/form-data" method="post" action="PDFToJPG">
        DPI：<input type="text" name="DPINum" value="请输入转jpg后的DPI（默认300）" style="width:300px;height:20px" min="1" max="500">
        <br>
        文件：<input type="file" name="file">
        <br>
        <button>提交</button>
    </form>
</body>
</html>